ASTM D5927 - 17

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Designation: D5927 −17
Standard Classiﬁcation System for and
Basis for Speciﬁcations for
Thermoplastic Polyester (TPES) Injection and Extrusion
Materials Based on ISO Test Methods
1
This standard is issued under the ﬁxed designation D5927; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
This material classiﬁcation system is intended to provide a callout system for thermoplastic
polyester materials based on ISO test methods.
1. Scope*
1.1 This classiﬁcation system covers thermoplastic polyes-
ter materials suitable for molding or extrusion.
1.2 This classiﬁcation system allows for the use of recycled
thermoplastic polyester materials provided that the require-
ments as stated in this classiﬁcation system and subsequent line
callout (speciﬁcation) are met. The proportions of recycled
material used, as well as the nature and amount of any
contaminant, however, cannot be covered practically in this
speciﬁcation.
1.3 The properties included in this standard are those
required to identify the compositions covered. Other require-
ments necessary to identify particular characteristics important
to specialized applications are to be speciﬁed by using the
suffixes as given in Section 5.
1.4 This classiﬁcation system and subsequent line callout
(speciﬁcation) are intended to provide a means of calling out
plastic materials used in the fabrication of end items or parts.
It is not intended for the selection of materials. Material
selection can be made by those having expertise in the plastic
ﬁeld only after careful consideration of the design and perfor-
mance required of the part, the environment to which it will be
exposed, the fabrication process to be used, the costs involved,
and the inherent properties of the material other than those
covered by this speciﬁcation.
1.5 The values stated in SI units are to be regarded as the
standard. The values given in parentheses are for information
only.
1.6 The following hazards caveat pertains only to the test
methods portion, Section 11, of this speciﬁcation: This stan-
dard does not purport to address all of the safety concerns, if
any, associated with its use. It is the responsibility of the user
of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limita-
tions prior to use.
NOTE 1—This standard and ISO 7792-1:2012 and ISO 7792-2:2012
address the same subject matter, but differ in technical content.
2. Referenced Documents
2.1 ASTM Standards:
2
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plas-
tics
D3892 Practice for Packaging/Packing of Plastics
D4000 Classiﬁcation System for Specifying Plastic Materi-
als
D7209 Guide for Waste Reduction, Resource Recovery, and
Use of Recycled Polymeric Materials and Products (With-
drawn 2015)
3
E29 Practice for Using Signiﬁcant Digits in Test Data to
Determine Conformance with Speciﬁcations
2.2 IEC and ISO Standards:
4
IEC 112 Recommended Method for Determining the Com-
parative Tracking Index of Solid Insulation Materials
IEC 243 Recommended Methods of Test for Electrical
1
This speciﬁcation is under the jurisdiction of ASTM Committee D20 on
Plastics and is the direct responsibility of Subcommittee D20.15 on Thermoplastic
Materials.
Current edition approved March 1, 2017. Published March 2017. Originally
approved in 1996. Last previous edition approved in 2014 as D5927 – 14. DOI:
10.1520/D5927-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3
The last approved version of this historical standard is referenced on
www.astm.org.
4
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
1
 

Strength of Solid Insulating Materials at Power Frequen-
cies
ISO 62 Plastics—Determination of Water Absorption
ISO 75-1:2013 Plastics—Determination of Temperature of
Deﬂection Under Load—Part 1: General Test Methods
ISO 75-2:2013 Plastics—Determination of Temperature of
Deﬂection Under Load—Part 2: Plastics and Ebonite
ISO 179-1:2010 Plastics—Determination of Charpy Impact
Strength
ISO 291:2008 Plastics—Standard Atmospheres for Condi-
tioning and Testing
ISO 294-1:1996 Plastics—Injection Moulding of Test Speci-
mens of Thermoplastic Materials—Part 1: General
Principles, Multipurpose-Test Specimens (ISO Mould
Type A) and Bars (ISO Mould Type B)
ISO 527-1:2012 Plastics—Determination of Tensile
Properties—Part 1: General Principles
ISO 527-2:2012 Plastics—Determination of Tensile
Properties—Part 2: Testing Conditions
ISO 604 Plastics—Determination of Compressive Properties
ISO 1133-2:2011 Plastics—Determination of the Melt Mass-
Flow Rate (MFR) and the Melt Volume-Flow Rate (MVR)
of Thermoplastics—Part 2: Method for Materials Sensi-
tive to Time-Temperature History and/or Moisture
ISO 1183-1:2012 Plastics—Methods for Determining the
Density of Non-Cellular Plastics—Part 1: Immersion
Method, Liquid Pyknometer Method, and Titration
Method
ISO 1183-2:2012 Plastics—Methods for Determining the
Density of Non-Cellular Plastics—Part 2: Density Gradi-
ent Column Method
ISO 1183-3:2012 Plastics—Methods for Determining the
Density of Non-Cellular Plastics—Part 3: Gas Pyknom-
eter Method
ISO 3451-2 Plastics—Determination of Ash—Part 2: Poly-
alkylene Terephthalates
ISO 7792-1:2012 Plastics—Saturated Polyester (SP) Mould-
ing and Extrusion Materials—Part 1: Designation System
and Basis for Speciﬁcation
ISO 7792-2:2012 Plastics—Polyalkylene Terephthalates—
Part 2: Preparation of Test Specimens and Determination
of Properties
2.3 Underwriters Laboratories (UL):
5
UL 94 Test for Flammability of Plastic Materials for Parts in
Devices and Appliances
2.4 National Technical Information Service (NTIS):
6
AD297457 Procedure and Analytical Method for Determin-
ing Toxic Gases Produced by Synthetic Compounds
3. Terminology
3.1 Deﬁnitions—The terminology used in this speciﬁcation
is in accordance with Terminologies D883 and D1600.
4. Classiﬁcation
4.1 Thermoplastic polyester materials are classiﬁed into
groups according to their composition. These groups are
subdivided into classes and grades, as indicated in the basic
property table (Table TPES).
NOTE 2—An example of this classiﬁcation system is as follows. The
designation TPES 0113 would indicate:
TPES = thermoplastic polyester as found in Terminology
D1600,
01 (group) = PBT,
1 (class) = general purpose, and
3 (grade) = requirements given in Table TPES.
4.1.1 Grades of reinforced or ﬁlled versions, or both, of the
basic materials are identiﬁed by a single letter that indicates the
reinforcement or ﬁller used and two digits, in multiples of ﬁve,
that indicate the nominal quantity in percent by weight. Thus,
a letter designation G for glass reinforced and 35 for percent or
reinforcement, G35, speciﬁes a material with a nominal glass
level of 35 %. The reinforcement letter designations and
associated tolerance levels are shown as tabulated as follows:
TABLE Reinforcement-Filler
A
Symbols
B
and Tolerances
Symbol Material Tolerance
C Carbon and graphite ±2 %
EClay ±2%
G Glass ±2 %
K Calcium carbonate ±2 %
L Lubricants (such as PTFE,
graphite, silicone, and
molybdenum disulﬁde)
depends on material and
process—to be speciﬁed
M Mineral ±2 %
PMica ±2%
R Combinations of reinforcements
and/or ﬁllers
±3 %
S Synthetic organic ±2 %
T Talcum ±2 %
X Not speciﬁed To be speciﬁed
A
Ash content of ﬁlled and/or reinforced materials can be determined using ISO
3451-2 where applicable.
B
Additional symbols can be added to this table as required.
NOTE 3—An example of this classiﬁcation system for reinforced
thermoplastic polyester is given as follows. The designation TPES
021G30 indicates the following:
TPES = thermoplastic polyester as found in Terminology
D1600,
02 (group) = PET,
1 (class) = unmodiﬁed, and
G30 (grade) = nominal 30 % glass with the requirements given in
Table TPES.
NOTE 4—This part of the classiﬁcation system uses the percent of
reinforcements or ﬁllers, or both, in the callout of the modiﬁed base
material. The types and percentages of reinforcements and ﬁllers are
sometimes shown on the supplier’s technical data sheet. If necessary,
additional callout of these reinforcements and additives can be accom-
plished by use of the suffix part of the system (see Section 5).
NOTE 5—Materials containing reinforcements or ﬁllers, or both, at
nominal levels not in multiples of ﬁve are included in the nearest TPES
designation. For example, a material with a nominal glass content of 28 %
is included with Grade G30.
NOTE 6—The ash content of ﬁlled or reinforced materials is determined
using ISO 3451-4.
4.2 Variations of thermoplastic polyester materials that are
not included in Table TPES are classiﬁed in accordance with
Table TPES and Table A or B. Table TPES is used to specify
the group of thermoplastic polyester, and Table A or B is used
to specify property requirements.
5
Available from Underwriters Laboratories (UL), 333 Pﬁngsten Rd.,
Northbrook, IL 60062-2096, http://www.ul.com.
6
Available from National Technical Information Service (NTIS), 5285 Port
Royal Rd., Springﬁeld, VA 22161, http://www.ntis.gov.
D5927 − 17
2
 

4.2.1 Speciﬁc requirements for variations of thermoplastic

polyester materials shall be indicated by a six-character desig-

nator. The designation will consist of the letter “A” or “B” and

the ﬁve digits comprising the cell numbers for the property

requirements in the order as they appear in Table A or B.

4.2.1.1 Although the values listed are necessary to include

the range of properties available in existing material, not every

possible combination of the properties exists or can be ob-

tained.

4.2.2 When the grade of the basic material is not known or

is not important, the use of “0” grade classiﬁcation shall be

used for materials in this system (see Note 7).

NOTE 7—An example of a reinforced thermoplastic polyester of this

classiﬁcation system is as follows. The designation TPES

0310G30A22450 would indicate the following material requirements

from Table A:

TPES0310 = PET copolymer, from Table TPES,

G30 = glass-reinforced at 30 % nominal glass content,

A = Table A for property requirements,

2 = tensile strength, 50 MPa, min,

2 = tensile modulus, 2700 MPa, min,

4 = Charpy impact, 6.0 kJ/m

, min,

5 = deﬂection temperature, 185°C, at 1.8 MPa, min,

and

0 = unspeciﬁed.

TABLE A Detailed Requirements:

Reinforced or Filled Thermoplastic Polyesters

Designation

Order

Number

Property

Cell Limits

0 12345678 9

1 Tensile strength, ISO 527-1:2012

and ISO

527-2:2012, min, MPa

unspeciﬁed 35 50 70 95 115 140 175 210 specify value

2 Tensile modulus, ISO 527-1:2012

and ISO 527-2:2012,

min, MPa

unspeciﬁed 1 400 2 700 4 100 5 500 6 900 8 000 10 000 12 500 specify value

3 Charpy impact, ISO 179-1:2010,

min, kJ/m

unspeciﬁed 1.5 3.0 4.5 6.0 8.5 11.0 13.5 17.5 specify value

4 Deﬂection temperature under

load at 1.8 MPa, ISO

75-1:2013 and ISO

75-2:2013, min, °C

unspeciﬁed 50 100 120 150 185 205 220 235 specify value

5 To be determined ... ... ... ... ... ... ... ... ... ...

It is recognized that detailed test values, particularly Charpy impact, do not necessarily predict nor even correlate with the performance of parts molded of these materials.

Tensile strength shall be determined using a Type A1 tensile specimen as described in ISO 527-2:2012. Crosshead speed shall be 5 mm/min± 20 %.

If a speciﬁc value is required, it must appear on the drawing or contract, or both.

Tensile modulus shall be determined using a Type A1 tensile specimen as described in ISO 527-2:2012 at a test speed of 1 mm/min ± 20 %.

The test specimen shall be 80 ± 2 by 10 ± 0.2 by 4 ± 0.2 mm, cut from the center of the Type A1 tensile specimen and tested as described in ISO 179:2010, Method

1eA.

The test specimen size shall be 80±2by10±0.2by4±0.2mm,cutfromthecenter of the Type A1 tensile specimen. The requirements are based on unannealed

test specimens.

TABLE B Detailed Requirements:

Special Thermoplastic Polyesters

Designation

Order

Number

Property

Cell Limits

0 12345678 9

1 Tensile strength, ISO 527-1:2012 and ISO

527-2:2012, min, MPa

unspeciﬁed 10 30 35 40 45 50 60 80 specify value

2 Tensile modulus, ISO 527-1:2012 and ISO

527-2:2012, min, MPa

unspeciﬁed 100 350 1000 1500 2000 2500 3000 4000 specify value

3 Charpy impact, ISO 179:2010, min, kJ/m

unspeciﬁed 2.0 3.5 5.0 8.0 13.0 18.0 25.0 50.0 specify value

4 Deﬂection temperature under load at 1.8

MPa,

ISO 75-1:2013 and ISO 75-2:2013, min,°

unspeciﬁed 30 45 60 70 80 90 100 115 specify value

5 To be determined ... ... ... ... ... ... ... ... ... ...

It is recognized that detailed test values, particularly Charpy impact, do not necessarily predict nor even correlate with the performance of parts molded of these materials.

Tensile strength shall be determined using a Type A1 tensile specimen as described in ISO 527-2:2012. Crosshead speed shall be 50 mm/min ± 10 %.

If a speciﬁc value is required, it must appear on the drawing or contract, or both.

Tensile modulus shall be determined using a Type A1 tensile specimen as described in ISO 527-2:2012 at a test speed of 1 mm/min ± 20 %.

The test specimen shall be 80±2by10±0.2by4±0.2mm,cutfromthecenter of the Type A1 tensile specimen and tested as described in ISO 179:2010, Method

1eA.

The test specimen size shall be 80±2by10±0.2by4±0.2mm,cutfromthecenter of the Type A1 tensile specimen. The requirements are based on unannealed test

specimens.

D5927 − 17

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ASTM D5927 - 17 是美国材料与试验协会发布的一项标准规范，标题为《标准规范用于纤维素纤维绝缘材料》（Standard Specification for Cellulosic Fiber Insulation）。该标准主要规定了用于建筑隔热和隔音用途的松散填充型纤维素纤维绝缘材料的性能要求、试验方法、标识及认证程序。内容涵盖材料的密度、热阻值、沉降率、燃烧特性（包括火焰蔓延和烟雾发展）、腐蚀性及抗真菌生长等关键技术指标。ASTM D5927-17 版本旨在确保纤维素绝缘产品在施工安

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